Allied Air Enterprises A80UH, 80G1UH Removal of the Furnace from Common Vent, Page 22 of, Issue

Page 22
Removal of the Furnace from Common Vent

Removal of the Furnace from Common Vent

In the event that an existing furnace is removed from a venting system commonly run with separate gas appliances, the venting system is likely to be too large to properly vent the remaining attached appliances.

Conduct the following test while each appliance is operating and the other appliances (which are not operating) remain connected to the common venting system. If the venting system has been installed improperly, you must correct the system as indicated in the general venting requirements section.

CARBON MONOXIDE POISONING HAZARDPage 22 of 39WARNING

CARBON MONOXIDE POISONING HAZARD

Failure to follow the steps outlined below for each appliance connected to the venting system being placed into operation could result in carbon monoxide poisoning or death.

The following steps shall be followed for each appliance connected to the venting system being placed into operation, while all other appliances connected to the venting system are not in operation:

1.Seal any unused openings in the common venting system.

2.Inspect the venting system for proper size and horizontal pitch. Determine that there is no blockage, restriction, leakage, corrosion, or other deficiencies which could cause an unsafe condition.

3.Close all building doors and windows and all doors between the space in which the appliances remaining connected to the common venting system are located and other spaces of the building. Turn on clothes dryers and any appliances not connected to the common venting system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they will operate at maximum speed. Do not operate a summer exhaust fan. Close fireplace dampers.

4.Follow the lighting instructions. Turn on the appliance that is being inspected. Adjust the thermostat so that the appliance operates continuously.

5.After the burners have operated for 5 minutes, test for leaks of flue gases at the draft hood relief opening. Use the flame of a match or candle.

6.After determining that each appliance connected to the common venting system is venting properly, (step 3) return all doors, widows, exhaust fans, fireplace dampers, and any other gas burning appliances to their previous mode of operation.

7.If a venting problem is found during any of the preceding tests, the common venting system must be modified to correct the problem.

Resize the common venting system to the minimum vent pipe size determined by using the appropriate tables in Appendix G. (These are in the current standards of the National Fuel Gas Code ANSI 2223.1.

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Issue 1031

506526-01

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Contents A80UH & 80G1UH TABLE OF CONTENTSINSTALLATION INSTRUCTIONS Warm Air Gas FurnaceFRONT VIEW A80UH & 80G1UH Unit Dimensions - inches mmSIDE VIEW A80UH & 80G1UH 506526-01DANGER Safety InformationInstalled Locations A80UH & 80G1UH Gas FurnaceTemperature Rise Installed in Combination with a Cooling CoilHeating Unit Installed Upstream of Cooling Unit Use of Furnace as a Construction HeaterAllied Air Enterprises, Inc GeneralProduct Contains Fiberglass Wool 215 Metropolitan Drive West Columbia, SCEquipment in Confined Space - All Air From Inside Unconfined SpaceConfined Space Figure Air from InsideEQUIPMENT IN CONFINED SPACE Upflow Application Installation Clearances Setting EquipmentUpflow Applications 3.Bottom return air 4.Return air from both sides Return Air - Upflow Applications1800 cfm 850 L/s must have one of the following 5.Bottom and one side return airRemoving the Bottom Panel Figure Horizontal Application Installatioin clearancesRemoving the Bottom Panel Horizontal ApplicationsTable Duct System Horizontal Application Unit installed on PlatformFilters Supply Air PlenumUPFLOW POSITION VentingMounting Screws Location Figure UPFLOW POSITION Figure UPFLOW POSITIONFigure HORIZONTAL LEFT POSITION Horizontal PositionHORIZONTAL LEFT POSITION HORIZONTAL RIGHT POSITIONVent Connection Figure Venting Using a Masonry ChimneyCommon Venting Using Metal Lined Masonry Chimney IssueGeneral Venting Requirements Issue Page 17 ofPage 18 of Serving a Single Category I ApplianceIssue 506526-01Page 19 of Serving a Single Category I ApplianceIssue 506526-01Common Vent Capacity Vent Connector CapacityServing Two or More Category I Appliances Serving Two or More Category I AppliancesVent Connector Capacity Table Common Vent CapacityServing Two or more Category I Appliances Table Serving Two or More Category I AppliancesIssue Removal of the Furnace from Common VentCARBON MONOXIDE POISONING HAZARD Page 22 ofGas Pipe Capacity - ft³/hr m³/hr Gas PipingGas Supply IssueIssue Possible Gas Piping ConfigurationsFigure Horizontal Applications Page 24 ofFigure Electrical ELECTROSTATIC DISCHARGE ESD INTERIOR MAKE-UPBOX INSTALLATION FigureLeak Check INTERIOR MAKE-UPBOX INSTALLATION FigureThermostat Accessory TerminalsGenerator Use - Voltage Requirements Condensing Unit Thermostat DesignationsPage 27 of Wiring Diagram FigureIssue 506526-01Integrated Control Typical Field Wiring Diagram FigureAutomatic Hot Surface Ignition System Placing the Furnace into Operation FOR YOUR SAFETY READ BEFORE LIGHTING UNITUnit Start-UP Gas Valve Operation FigureSupply Pressure Measurement Gas Pressure Adjustment Gas Flow ApproximateHeating Sequence Of Operation Figure Manifold Pressure MeasurementFlame Rollout Switches Manifold Pressure Settings and Pressure SwitchOther Unit Adjustments Pressure SwitchBlower Speeds Thermostat Heat AnticipationElectrical Electronic IgnitionBlower ServiceELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD Flue And ChimneyPage 34 of Cleaning the Heat Exchanger and BurnersIssue 506526-01Remove 5 Screws If Necessary NOx INSERTS FigureIssue PLANNED SERVICEFAILURE CODES Page 36 ofHeating Parts REPAIR PARTS LISTCabinet Parts Control PanelPage 38 of START-UP& PERFORMANCE CHECK LIST UNIT SET UPIssue 506526-01Page 39 of IssueUNIT OPERATION 506526-01